Propelling mechanism



E. SPHLER.

PROPELLING MECHANISM.

APPLICATION FILED MAY n. 1918.

Patented Mar. 2, 1920.

INVENTOR ATTORMEV nrlr srrrtnn, or MOSCOW, rnnrio.

- PRQFELLING MECHANISM.

Application filed May 17,

' To all whom it may concern:

Be it known that I, ELI SPITLER, a citizen of the United States, residing at Moscow, in the county of Lotah and State of lldaho,

have invented certain new and useful In1- provements in Propelling Mechanisms, of

the blade whereby the speed of the vessel will be changed and which means is so constructed and assembled as to minimize the *opportunity for Wear or breakage.

With these objects in view, together with others which will appear as the description pro eller blades, e. fig. 3 is a longitudinal sectional view.

proceeds, the invention resides in the novel formation, combination and arrangement of parts, all as will be described more fully hereinafter, illustrated in the drawings, .and particularly pointedlout in the claim.

In the drawings Figure 1 is a side elevation of the improved propeller mechanism constructed in accordance with the invention, 7

Fig. 2 is a top plan view of the means for controlling the degreeof angularity of the taken through the in housing, and ig. d is an housing with t propeller blade. support- Referring now more particularly tolthe drawings, 5 represents posts or blocks for the support of the 6 of conventional form being. arranged at the upper end thereof to rotatably support the said shaft. I

The propeller shaft in the present instance is hollow, and is indicated at 7. This shaft is provided ley 8 to be coupled with the engine or other power mechanism upon the boat, whereby 1 Specification of Letters Patent.

end view. of "thefpropeller' he cap removed-v therefrom, and illustrating themechanism-toy which the movements of the-blades are controlled.

propeller' shaft, bearings v p the proper ,place within at its inner end with a pul-.

Patented Mar. 2, 1192i). 1918. Serial no. 235,128.

rotary movement may be developed in the propeller shaft. The outer end of the shaft 1s provided with a double-conical head includlng a substantially conical housing section indicated at 9, over the end of which a similarly formed cap 10 is engaged. The hollow section 9 and cap 10 have their base portions of substantially the same diameter and these base portions fit together and are held properly assembled by the securing straps ll. y so arranging the housing, it is obvious that the cap may be readily removed when it is required to repair or inspect the mechanism which is to be located within the housing.

Rotatably mounted in bearings 12, at the outer end of the section 9 and disposed transversely thereof, are the inner ends or shanks of propeller blades 13. The blades at the opposite sides of the housing section are in alinement with each other and are disposed at right angles to the length of the the ends of which links 15 are connected.

These links at their inner ends are pivotally connected to a rod 16 which is disposed within and extends throughout the length of the hollow shaft 7.

The inner end of the rod 16 protrudes be yond the corresponding end of the hollow shaft 7 and is rotatably mounted in a transverse bar'17. This bar 17 has secured to its ends the extremities of a U-shaped bail 18, the latter being rotatably mounted at its bend in a bearing 19 arranged adjacent the upper end of a'lever 20. The lever 20 is pivoted at its lower end as at 21 within the vessel'with which the device is used,and has pivoted at its other extremity a handle 22 provided vwith a seriesv of spaced notches 23 adapted to engage over a'plate 24; secured to the upper end of astanchion or post 25. By so constructing the device, it is obvious that 'thethrowof, the lever 20 may be controlled by'th ihandle The lever 20 is held positively lockedin any of its positions of ad justment by engagement ofthe plate Within the'notches on the handle.

independently of a vessel, but it will bounderstood that the device is to be located at the vessel at the outer end 0nd the vessel and at ow the surface of the housing shaft will protrude be the proper distance be so that of the propeller,

-it is desired to vary :operate to water. A. belt from the source of motor power may be passed over the pulley 8, and the mechanism is ready for operation. The shaft 7 is driven at a steady speed, and when the speed of the vessel, the rod 16 is moved inwardly or outwardly of the hollow shaft 7. This sliding movement of the rod causes the blades 13 to be rotated within the supporting blocks or bearings 12 whereupon the degree of angularity of the blades will be changed. If desired, the apparatus may be so operated that the propellers will be disposed in a single plane, whereupon the rotation of the device Wlll not drive the vessel in either direc- -tion. By working the rod 16 longitudinally of the'propeller shaft, the angularity of the blades may be changed so as to offer a relatively great resisting surface to the water whereupon the vessel will bedriven at good speed. When it is desired to rection of travel of the vessel, the rod 16 is moved inwardly of the casing until the outer extremities of the links 15 extend beyond the inner ends of the blades 13 whereupon the bladeswill be disposed at such angle as to deliver pulling power upon the supporting or driving shaft 7. It is obvious, therefore,

that the direction of rotation of the shaft? need not be changed to either direction.

The foregoing description and the drawdrive the vessel in reverse the diings have reference to what may be considered the preferred or approved form of my invention. It is to be understood that I may make such changes in construction and arrangement and combination of parts, rials, dimensions, etc., as may prove expedlent and fall within the scope of the appended claim.

Having thus described I claim as new and desire to secure by ters Patent, is i I In a device of the class described, the-combination of a hollow propeller shaft having a double conical head upon its outer end, thereby forming a conical housing and a conical cap, cylindrical flanges provided upon the enlarged end of said housing and said cap so that the flange of said cap will inclose the flange of said housing, straps carried by said 'capand connected to said housing for holding the head assembled, said housing having bearings upon its outer end contiguous to said cap, blades having shanks carried by said bearing, means carried within said shaft and head for turning said shanks to adjust the pitch-of said blades.

In testimony whereof I affix my signature in presence of two witnesses.

ELI SPITLER.

the invention, what Let- Witnesses:

JUDD RAY WHITE, I JAMEs NOLAN.

mate- I 

